Antenna and Display Device

1. An antenna, comprising: at least one feed line including a first feed line and a second feed line; a plurality of first patch units serially connected to the first feed line in an extending direction of the first feed line; and a plurality of second patch units serially connected to the second feed line in an extending direction of the second feed line, wherein a second patch unit of the plurality of second patch units is perpendicular to a first patch unit of the plurality of first patch units; at least one of the first feed line and the plurality of first patch units has a mesh structure, the second feed line and the plurality of second patch units each have the mesh structure, and the mesh structure is composed of a plurality of conductive lines; a distance between two conductive lines of the plurality of conductive lines that are adjacent and do not intersect is greater than or equal to a maximum width of any conductive line of the plurality of conductive lines, and is less than or equal to a minimum width of any feed line of the at least one feed line; and the antenna is configured to transmit a radio frequency signal, and the distance between the two conductive lines of the plurality of conductive lines that are adjacent and do not intersect is less than or equal to ⅕ of a wavelength of the radio frequency signal, and is greater than or equal to 1/10 of the wavelength of the radio frequency signal.

2. The antenna according to claim 1, wherein the first feed line includes a plurality of first conductive lines with substantially parallel extending directions and a plurality of second conductive lines with substantially parallel extending directions, and the plurality of first conductive lines and the plurality of second conductive lines constitute the mesh structure; the plurality of first patch units each include a plurality of third conductive lines with substantially parallel extending directions and a plurality of fourth conductive lines with substantially parallel extending directions, and the plurality of third conductive lines and the plurality of fourth conductive lines constitute the mesh structure; and a first conductive line of the plurality of first conductive lines, a second conductive line of the plurality of second conductive lines, a third conductive line of the plurality of third conductive lines and a fourth conductive line of the plurality of fourth conductive lines are each one of the plurality of conductive lines.

3. The antenna according to claim 2, wherein the first conductive line is substantially parallel to the third conductive line; and the second conductive line is substantially parallel to the fourth conductive line.

4. The antenna according to claim 1, wherein the plurality of first patch units are alternately connected in series to the first feed line at two sides thereof, and the first patch unit of the plurality of first patch units is non-perpendicular to the first feed line.

5. The antenna according to claim 1, further comprising: at least one impedance matching unit, an impedance matching unit of the at least one impedance matching unit being coupled to a feed line of the at least one feed line, wherein the at least one impedance matching unit has the mesh structure.

6. The antenna according to claim 5, wherein the impedance matching unit is connected to an end portion of the feed line.

7. The antenna according to claim 6, wherein the impedance matching unit is in a shape of a regular polygon; and the impedance matching unit is symmetric with respect to an extending line of the feed line.

8. The antenna according to claim 7, wherein the impedance matching unit has a groove, the end portion of the feed line proximate to the impedance matching unit is connected to a bottom of the groove, and there is a gap between the feed line and each of two sidewalls of the groove.

9. The antenna according to claim 8, wherein a distance between the two sidewalls of the groove is in a range of 1.4 times to 1.8 times a width of the feed line; and a depth of the groove is in a range of 0.5 times to 2.25 times the width of the feed line.

10. A display device having a light exit surface, the display device comprising: a dielectric layer; a pixel circuit layer located on a side of the dielectric layer away from the light exit surface; and an antenna layer located on a surface of the dielectric layer proximate to the light exit surface, the antenna layer including at least one antenna array, and an antenna array of the at least one antenna array being configured to transmit the radio frequency signal, wherein the antenna array includes a plurality of antennas each according to claim 1, and the plurality of antennas in the antenna array are arranged sequentially in a direction perpendicular to a thickness direction of the display device.

11. The display device according to claim 10, wherein the at least one antenna array includes a plurality of antenna arrays, the plurality of antenna arrays are arranged sequentially in the direction perpendicular to the thickness direction of the display device, and a distance between any two adjacent antenna arrays of the plurality of antenna arrays is in a range of ¼ to ¾ of the wavelength of the radio frequency signal.

12. The display device according to claim 10, further comprising: a direction adjusting unit coupled to the antenna array, and the direction adjusting unit being configured to adjust a direction of the radio frequency signal transmitted by the antenna array.

13. The display device according to claim 12, wherein the direction adjusting unit includes transmission lines arranged in a form of Butler matrix; and the Butler matrix includes a plurality of input ports and a plurality of output ports, an output port of the plurality of output ports is coupled to the antenna in the antenna array, the output port communicates with the plurality of input ports of the Butler matrix, and the output port and each input port of the plurality of input ports have a different connection path.

14. The display device according to claim 10, further comprising: a dummy pattern disposed in a same layer as the antenna layer, and there is a gap between the dummy pattern and the antenna layer; wherein the dummy pattern has the mesh structure.

15. The display device according to claim 14, wherein the dummy pattern includes a plurality of first traces with substantially parallel extending directions and a plurality of second traces with substantially parallel extending directions, and the plurality of first traces and the plurality of second traces constitute the mesh structure; and a distance between any two adjacent first traces of the plurality of first traces is greater than or equal to 1/10 of the wavelength of the radio frequency signal, and is less than or equal to ⅕ of the wavelength of the radio frequency signal, and a distance between any two adjacent second traces of the plurality of second traces is greater than or equal to 1/10 of the wavelength of the radio frequency signal, and is less than or equal to ⅕ of the wavelength of the radio frequency signal.

16. The display device according to claim 15, wherein a first trace of the plurality of first traces includes a plurality of first trace segments, a length of a first trace segment of the plurality of first trace segments is less than or equal to ½ of the wavelength of the radio frequency signal, and a distance between any two first trace segments of the plurality of first trace segments that are adjacent and located in a same line is in a range of 5 times to 20 times a width of the first trace; and a second trace of the plurality of second traces includes a plurality of second trace segments, a length of a second trace segment of the plurality of second trace segments is less than or equal to ½ of the wavelength of the radio frequency signal, and a distance between any two second trace segments of the plurality of second trace segments that are adjacent and located in a same line is in a range of 5 times to 20 times a width of the second trace.

17. The display device according to claim 15, wherein a distance between the dummy pattern and the antenna layer is in a range of 10 times to 30 times a width of a first trace of the plurality of first traces.